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| Home > Publications database > Range calculations for spallation recoils in ThF$_{4}$ by use of the computer code "MARLOWE" |
| Home > Publications database > Range calculations for spallation recoils in ThF$_{4}$ by use of the computer code "MARLOWE" |
| Book/Report | FZJ-2018-01239 |
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1978
Kernforschungsanlage Jülich, Verlag
Jülich
Please use a persistent id in citations: http://hdl.handle.net/2128/17404
Report No.: Juel-1563
Abstract: The determination of cross sections of spallation reactions requires a knowledge of the target thickness since only the products recoiling from the target are measured and their yield depends on the range. The $\underline{effective}$ target thickness is a function of the projectile's Z, A and spallation recoil energy and, thus, varies for the individual products. The computer code MARLOWE was used to evaluate energy $\underline{vs.}$ range curves in the binary collision approximation. The program was extended to the high energy regime taking into account the stripping of electrons from the projectile and the concomitant changes in the interaction potentials especially for the inelastic part of the collisions. A complementary computer program LATTIC was developed for the parameterization of thelattice description. This code enables the application of MARLOWE to target materials with complicated crystallographic structure. Test calculations for aseries of projectile/target combinations showed a reasonable agreement with experimental recoil ranges of Pd, Ag, Os and Ir isotopes from proton induced spallation in Ag, In and Pb targets, respectively. MARLOWE was then applied to calculate product ranges of the $^{232}$Th (p,spall)X-reaction in the polyatomic system ThF$_{4}$. Thecalculated energy vs. range curves enabled the evaluation of the mean spallation recoil ranges for all possible products, e.g. 170.8 $\mu$g/cm$^{2}$ for $^{192}$Tl, 115.2 $\mu$g/cm$^{2}$ for $^{208}$At and 37.1 $\mu$g/cm$^{2}$ for $^{223}$AC.
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